Trampoline

The very first trampoline was invented by the native Intuit people of North America, who used a walrus skin to toss each other around. In circus applications, clowns figured out the trampoline would be fun after seeing how acrobats landed and bounced in the net below the trapeze. Your backyard trampoline has a high-quality netting that is stretched between a frame and connected to springs. The netting in itself isn't elastic, it's the springs that give it bounce.